### Description of the change
Use the same namespace template for all `namespace:` fields, this would be no error if the ServiceAccount would had the same different template than the reference.
I found this while analyzing existing code statically via `namespace:` search.
Updated to also use correct namespace in existing secret lookup
### Benefits
Previously if .Values.namespace and .Release.Namespace didn't match this might caused an install error.
e.g. in values.yml
```yaml
namespace: test
# ** enable provisioning job is required
```
However installed using
```
helm install -f values.yml --create-namespace --namespace install-name-space myactions .
```
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Reviewed-on: https://gitea.com/gitea/helm-actions/pulls/11
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Christopher Homberger <christopher.homberger@web.de>
Co-committed-by: Christopher Homberger <christopher.homberger@web.de>
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